Starter for explosive-engines.



PATBNTED SEPT. a, 1907.

. J. B. BARTHOLOMEW.

STARTER FOR BXPLOSIVE ENGINES.

APPLICATION FILED BEIT.1,1903

'STATES PQENT OFFICE.

JOHN. B.'BARTHOLOMEW, OF PEORIA, ILLINOIS, ASSIGNOR TO THE BARTHOLOMEWCOMPANY, OF PEORIA, ILLINOIS, A vCORPORATION OF ILLlNOlS.

STAQRTEB FOR EXPLOSIY-ENGNES.

To all 'whowi 'it may concern: Y

Specification of Letters Patent. Application flled'ssptember 1,1903.Serial No. 171,645.

Patented Sept. :3, 1907.

l to, and reference can be made thereto for a full under- Be it knownthat I, JonN B. BARTHOLOMEW, aicitizen standing of one such set` ofparts.

of the United States, residing `at Peoria, in the county of Peoria andState of-Illinois, have invented certain new and useful Improvements inStarters for Explosive- Engines, of which the following is aspecification, reference being had therein to the accompanying drawing.

This invention relates to mechanism for starting explosiveengines, itbeing particularly Well adapted for Ait use in connectionl with theengines employed in automobiles'. v

It consists in providing what may be regarded as a friction clutch oneelement of which is connected with the engine and the other element ofwhich is adapted to be actuated by manually controlled devices. With the.parts for accomplishing the starting of the engine, I

`also combine means for positively insuring that any reactionarymovement of the engine shall not cause serious accident.

The several features of invention and advantage will be readilyunderstood from thedrawings and description following.

Figure l is a view of a sufficient portion of'an automobile toillustrate the manner ofapplying the mechanism embodying myimprovements. Fig. 2 is a side elevation of tle fly wheel of amengineprovided with one of myimproved starting devices. Fig. 3 shows the flywheel in vertical section and the starting devices in` lend elevation.Fig. 4 shows the rotary carrier detached.

Fig'. 5 is a vertical sectionthrough the shoe arm E.

It will be understood that my improved starting device can be used withor gasolene engines of different forms and with engines employed fordifferent purposes than thatherein illustrated.

In order to show one way of applying my improvements, l have indicatedin the drawings more-orleansconventionally an automobile 0r road vehiclepropelled by a gasolene engine.

The body of the vehicle is indicated by l, 2 indicating i be constructedand arranged in any suitable manner, it

is not necessary to here describe them in detail.

In an earlier application for patentl which I` filed on.

.Tune 30, 1903, Serial No. 163,758, I have shown the full details of amechanism such as is here generally alluded starting device forbringingthe parts of the engine tov those positions where they willcommenceautomatically their desired movements, vthe description herein willberestricted thereto.

5 indicates the fly wheel which is secured tothe crank shaft 4, thiswheel meeting the usual requirements oa gas oroil engine. On one sideits hub is made cylindrical, it being preferably trued up in a machine,if necessary, so that its periphery shall be concentric with the axis oftlie'shaft 4. On this hub there is placed a collar 7 fitted snuglythereto and ladapted to turn freely thereon. From this collar thereextends outward radially an arm C.' arm there is pivoted aswinging levercarrying afriction shoe. The lever is indicated as a whole by4 G, ithaving an arm at E provided with a friction shoe-e which is arranged toengage with a concave surface at 8 formed on the fly wheel. `The lever Ghas also an arm D arranged at an angle to the shoe arm E.

d indicates a pivot which unites the friction lever with the rotary armC. l

B is a draft link or pitman which is pivotally coni nected to the arm D.It extends upward and preferably at a forward inclination to a point infront of the drivers seat at 2.

A is a lever pivoted at a to a'suitable part of the car-- riage frame.It is approximately vertical in position or slightly inclined, andstands normally within easy reach of, an occupant of the carriage seat.When this seat is adaptedto hold two' riders, this lever is prefer'-ably'arranged in the f-vert'ical, longitudinal plane ofthe Y carriage atthe middle partol the seat sothat it can be reached by either occupant.

H indicates part of the framework of the 'vehicle or of thesupport forthe engine, and I utilize this frame as one element of a safety deviceadapted to disconnect A the-hand operated parts of'the starter from theengine in case therfly wheel should tend to rotate backward. I is an armon the friction lever extending upward i beyond the pivot at d.

F isa stop, preferably a pin, seculfa'lu tothe frame,

21s, for instance, to the bar H. This pin is so situated lthat itcanfbestruck bythe arm 'l as the latter movesl backward and when sostruck it 'will cause the armto swing the friction shoe'ont ofengagement with the fly wheel.

The mode ofeperation, and manner of using the devices which -Ihavedescribed will be readily understood. When a rider occupying' the seatof the vehicle desires lo the outer end of this.

tol

. surface at 8 on the fly Wheel and to firmly engage 'eachiorward' throwof the lever.

therewith, and the next result, forward draft being l exerted by thelever A on the link B, is to cause the forward rotation loi the flywheel. The parte are so related as to permit about oneaciith lof arevolution at The driver repeats this reciprocating movement until thefly wheel brings the'crank, and the latter brings the engine piston tothe proper' place in thecycle tor the first explosion. When thisexplosion occursythe engine commences to revolve tlie'crank shaft andthereaiter the rotation oi the shaft continues automatically. ritter theengine has started,y the driver permits the lever A and link B to movebackward far enough to permit the arm lv to impinge upon the stop Fwhich thrusts and holds 'the friction shoe out of engagement with thewheel until it is again desired to start the wheel from rest. The wheelcan revolve forward with safety even when the friction shoe isl incontact therewith, 'as the direction of its motion is such' that therewill be no binding or locking, If at any time in starting the engine apremature explosion should occur tending to drivethe piston suddenlybackward before it completes its movement toward the larger receivingend of the cylinder, the operator is saved from accident by-theparts atF and I. There may be a short backstroke of the lever A resulting YTheco-aating surfaces -of the fly wheel 'and of the sl'oe are smooth, withtheresult that, while suicient seance LWhat I claim is:

1.. In a starting device for an internal combustion` eilgine, thecombination of the .engine shaft, a ily wheel mounted thereon,l`1aving afriction surface, a rotary reciprocating friction shoe arranged toengage with the friction surface of the 'fly wheel when moved in onedirection, and arranged to easily separate therefrom when moved in theopposite direction, means for moving the friction shoe bodily toward they wheel to engage with and turn the latter forward or for moving itbodily away from the wheel to disengage the shoe, andautomaticallyacting devices fordisengaging the sh'oe'from the ily wheelwhen it is carried backward, substantially as set forth.

2. In a. starting device for an internal combustionengine, thecombination with the engine shaft andl a y wheel thereon, formed with aconcave friction surface, of an arm free to turn 'about the axis of theshaft, a lever pivoted to the outer end of the said arm, a frictionyshoe carried by the lever and arranged to engage with the frictionsurface of the tly wheel, and operating means for reciprocating thefriction slioe, such means being connected with the said pivoted leverat a point between its pivot Hand theaxis of the fly wheel, whereby theshoe is brought into engagement with the fly wheel or is. disengagedtherefrom in advance by a forward or backward movement of the said arm,substantially as set forth.

In testimony whereof I aii myv signature in presence of two witnesses.

JOHN B. BARTHOLOMEW.

Witnesses:

CHAs. TJADEN, IRMA B. PENNoYnn.

